Chuck



1,476,434 4! 3 E. H. w. WEIBULL CHUCK Filed Nov. 50. 1920 E Men 307 EA #14 W27; zmzz a; wem

Patented 4-, 1923.

s'ra'ras ERNST HJALIVIAR VVALODDI WEIBULL, O1 GOTTENBORG, S'WEDEN, ASSIGNOE, BY

MESNE ASSIGNMENTS, T NYA NOEDISKA KULLAGER AKTIEBOLAGET, OF GOTTEN- BORG, swnnnn.

CHUCK.

Serial No. 427,411.

(GRANTED UNDER THE PROVISIGNS 0F ACT 01? MARCH 3, 1921, 41 STATE. I, 1313.)

To (LZZ whom it 711 ay concern Be it known that I, ERNST liJiiiliran \VALODDI vVnInULL, a subject of the King of Sweden, residing at Gottenborg, in the county of Gottenborg and Bohus and Kingdoin of Sweden, have invented a new and useful Improvement in Chucks (for which I have filed application in Sweden, November 15, 1919, #5,118; 1919), Of which the following is a specification.

The present invention relates to chucks and has for its object to provide a device of this character which is so constructed that the workpiece by a simple operation may be quickly and easily fastened in position or removed, as desired.

The features which distinguish a chuck according to this invention consist essentially in that the holder to be used for fastening the workpiece is provided with fingers and bayonet slots and is mounted for adjustment bodily on the sleeve upon which the workpiece rests.

The embodiment shown in the accompanying drawing is a chuck which is particularly adapted for internal work on ring-shaped bodies.

In the accompanying drawing wherein an improved embodiment of the invention is illustrated Figure 1 isa front elevation of the chuck;

Fig. 2 is a longitudinal section of the chuck;

Figs. 3 and 1 are detail sectional views on the iines AA and 13-13 of Fig. 2.

Referring to the drawing in detail, the numeral 1 indicates a sleeve provided with slots 8 adapted to receive suitable fastening means whereby the sleeve may be secured to a machine spindle or the like. The sleeve 1 is internally "formed. to provide a seat for the workpiece, which latter has been illustrated as ball bearing rings 7, and externally the sleeve is partially screw-threaded for mounting the adjustable ring 3. The ring 3 is provided at its outer end with a flange 5 having notches 6 therein. he workpiece holder 2 is adapted to clamp the workpiece in place in the sleeve 1 and for this purpose is provided with an internal flange 2 The holder is provided with angular fingers 4 adapted to be introduced in the notches 6 in the adjustable ring 3.

i followsr-ihen the workpiece 7 has been placed in position in the sleeve 1 and the ring 3 screwed on the sleeve, the holder 2 is fitted so that its fingers 4 enter the notches 6 on the flange 5 of the ring 3. The holder 2 is then turned relative to the ring 3 so that ts fin ers engage behind the flange 5 accordmg to: Fig. 4, and then the holder 2 and ring 3 are turned as a unit so as to advance the threaded sleeve, until the workpiece 7' is clamped in its position.

The releasing of the workpiece 7 is made by turning the holder in a retrograde direction so that the fingers 4 are disengaged from the flange 5, whereafter the holder is taken oli independently of the ring 3. Another workpiece of same dimensions may be subsequently fastened or uniastened by this simple turning of the holder combined witlr a similar motion of the adjustable ring.

It the fingers 1 or the flange 5 in their contact faces are worn, the ring 3 may be advanced so much as required for taking up the wear. 9 7

A chuck as per this invention may of mandrel for other kinds of workpieces than the above described or shown on the drawing.

V'Vhat I claim is 1. A chuck comprising a sleeve provided with an internal work receiving recess, a ring threaded for adjustment longitudinaily of said sleeve, a recessed flange on said ring, a work holder having an internal flange adapted to overlie said recess, angular lingers carried by the holder adapted for insertion in the recesses of the ring flange and responsive to partial rotation of the holder relative to the ring whereby to secure said holder in position thereon, said fingers acting to limit the rotary movement of the holder relative to the ring, whereby subsei workpiece is attached'to the chuck as quent .to the securingof the holder, further 2. A chuck comprising a sleeve provided with an internal'work receiving recess, a ring threaded for adjustment longitudi of said sleeve, a removable work holder raving an internal flange adapted. to overlie said recess, an external recessed flange on the ring, angular fingers carried by the holder adapted for insertion in the recesses of the ring flange and responsive to partial rotation of the ring relative to the holder whereby to secure the latter in position, said fingers acting to limit the rotary movement of the holder relative to the ring whereby, subsequent to the securing of the holder, further rotary movement of the latter is transmitted to the ring to cause the latter toadvance on the threadsorf the sleeve and to cause the internal flange .to approach the Work receiving :reeess.

3. A chuck comprising a sleeve provided with ,a terminal internal work vreceiving (recess, a ring member threadedzonlthe recessed end of the sleeve and adapted for adjust able movement thereon, a peripherai flange having recesses therein carried by said ring member, a removable work piece holder provided with an internal fia-nge ovc1'; the recess in said leeve forengaging and ret aining a work piece therein, and angular fingers carried by said work piece holder, said fingers being adapted to be inserted in the recesses of the peripheral'fiange and, incident to turning.oi said work ,piece holder, to have the angular extremities thereof engaged behind said flange, said ring member and work niece holder being adjustable as a unit, when assembled, on said sleeve and said work piece holder being iremovablelsepa-rately from said ring member by disengag- @ing the angular fingers from the peripheral flange.

in testimony whereof I have afiixed my signature.

ERNST HJALMAR WALQBDI .WEIBHLL. 

